94 lines
2.3 KiB
PHP
94 lines
2.3 KiB
PHP
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<?php declare(strict_types=1);
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/*
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* This file is part of sebastian/lines-of-code.
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*
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* (c) Sebastian Bergmann <sebastian@phpunit.de>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace SebastianBergmann\LinesOfCode;
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use function array_merge;
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use function array_unique;
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use function assert;
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use function count;
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use PhpParser\Comment;
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use PhpParser\Node;
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use PhpParser\Node\Expr;
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use PhpParser\NodeVisitorAbstract;
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final class LineCountingVisitor extends NodeVisitorAbstract
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{
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/**
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* @psalm-var non-negative-int
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*/
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private readonly int $linesOfCode;
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/**
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* @var Comment[]
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*/
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private array $comments = [];
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/**
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* @var int[]
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*/
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private array $linesWithStatements = [];
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/**
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* @psalm-param non-negative-int $linesOfCode
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*/
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public function __construct(int $linesOfCode)
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{
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$this->linesOfCode = $linesOfCode;
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}
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public function enterNode(Node $node): void
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{
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$this->comments = array_merge($this->comments, $node->getComments());
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if (!$node instanceof Expr) {
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return;
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}
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$this->linesWithStatements[] = $node->getStartLine();
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}
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public function result(): LinesOfCode
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{
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$commentLinesOfCode = 0;
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foreach ($this->comments() as $comment) {
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$commentLinesOfCode += ($comment->getEndLine() - $comment->getStartLine() + 1);
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}
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$nonCommentLinesOfCode = $this->linesOfCode - $commentLinesOfCode;
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$logicalLinesOfCode = count(array_unique($this->linesWithStatements));
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assert($commentLinesOfCode >= 0);
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assert($nonCommentLinesOfCode >= 0);
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assert($logicalLinesOfCode >= 0);
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return new LinesOfCode(
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$this->linesOfCode,
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$commentLinesOfCode,
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$nonCommentLinesOfCode,
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$logicalLinesOfCode,
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);
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}
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/**
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* @return Comment[]
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*/
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private function comments(): array
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{
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$comments = [];
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foreach ($this->comments as $comment) {
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$comments[$comment->getStartLine() . '_' . $comment->getStartTokenPos() . '_' . $comment->getEndLine() . '_' . $comment->getEndTokenPos()] = $comment;
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}
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return $comments;
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}
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}
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